Adjustable boob-jamb



C. C. SMITH.

ADJUSTABLE DOOR JAMB. APPLICATION FILED DEC.2, I9I6. RENEWED FEB. 17,I9I9.

Patented June 17, 1919.

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ilNiTED STATES PATENT @FFlQE.

CHARLES 0. SMITH, OF DES MOINES, IOWA.

ADJUSTABLE DOOR-JAMB.

Specification of Letters Patent.

Patented June 17, 1919.

Application filed December 2, 1916, Serial No. 134,570. Renewed February17, 1919. Serial No. 277,655.

i To all whom z'tmay concern:

Be it known that 1, CHARLES C. SMITH, a citizen of the United States,and resident of Des Moines, Polk county, Iowa, have invented a new anduseful Adjustable DoorsJamb, of which the following is a specification.

The object of this invention is to provide an improved adjustable door jamb'w'hereby a permanent adjustment may be made to insure a close fitbetween a door and jamb, without binding, for any condition oftemperature or other atmospheric conditions.

A further object of this invention is to provide improved means toinsure a tight closure of doors relative to their jambs under allconditions of temperature, atmosphere and the like within and without abuilding on which the structure is employed.

A further object of this invention is to provide improved means toefi'eot a desired relation of a door to its jamb at all times and underall conditions.

A further object of this invention is to provide an improved adjustabledoor jamb of simple and inexpensive construction and easy ofapplication, whereby to prevent or minimize the necessity for frequentrepairs and alterations of the door relative to the jamb to suit varyingconditions of use.

A further object of this invention is to facilitate the hanging andfitting of doors and keeping them in proper relation to the jambs undervarying conditions of use.

My invention consists in the construction, arrangement and combinationof elements hereinafter set forth, pointed out in my claim andillustrated by the accompanying drawing, in which- Figure 1 is ahorizontal section through a portion of a door and its casing, showingmy improvement in position for practical use. Fig. 2 is a perspectiveview of a portion of the jamb, partly in section and on a reduced scale.

In the construction of the device as shown the numeral 10 designates aside jamb of a door casing, on one margin of which jamb is secured acasing member 11, and on the inner face of which jamb is secured a stopstrip 12 to receive contact of the free margin of a door 13 when saiddoor is closed. In the inner face of the jamb 10, and adjacent onemargin thereof, at a point adjacent the free margin of the door 13 whenin closed position, is formed a vertical rabbet 14, said rabbet being ofany desired and suitable depth and of a width preferably corre' spondingto the thickness of the door, and of the distance of the stop 12 fromsuch margin of the jamb. An adjustable jamb strip 15 is provided, and isof a width corresponding to the width of the rabbet 14 and door 18, andof a thickness materially less than the depth of said rabbet, and saidstrip'is mounted in said rabbet, it being understood that said rabbetand strip extend throughout the length of the j amb member 10, or fromtop to bottom of the door. A plurality of screw-headed bolts 16 aremounted through the adjustable strip 15 at selected intervals and extendloosely through apertures in the jamb member 10,

and are seated in bearing plates 17 mounted in or on the opposite faceof said jamb member from the rabbet 14. Yielding pressure devices 18, inthis instance composed of curved leaf springs, are mounted in the rabbet14 behind and bearing at opposite ends against the adjustable jamb strip15 adjacent the side margins of said strip, and it is the function ofsaid springs to hold said strip to its outermost limit, of movement aslimited by the screws or bolts 16 and prevent oscillation of the stripon said screws or bolts. It is the function of the screws or bolts 16 toadjust the position of the strip 15 toward or away from the door 13,within the rabbet 14 and relative to the springs 18, thereby adjustingand regulating the amount of space or the joint between the door whenclosed and its jamb. The connecting devices 16 also pass through thesprings 18, thus holding said springs in position and tending to preventrocking movement thereof, while at the same time permitting sufficientfreedom of movement that the springs may compensate for any unevennessof the jamb members, and hold the strip 15 in the desired position ofadjustment. It is preferable to leave a small space such as is indicatedby the numeral 19 in Fig. 1, between the closed door and the jamb,especially when said door is used in the interior of a building, or inother words is not an outside door, thereby preventing a sliding orgrating contact of the door with the jamb in the operation of opening orclosing the door. This space may be provided for, in greater or lessdegree as desired, by employing my device herein shown and described.

The heads of the screws or bolts 16 are countersunk in the strip 15, andmay be bronzed or otherwise finished to harmonize With the finish of thehardware employed on the door; or With the finish of the Woodwork of theroom.

The use of this device provides an easy means for regulating andadjusting the joint or closure of a door in its casing, and assures aproper relation between said door and the jamb under .varyingconditions. It elimi- Hates the annoyance of binding or loose fittingdoors, and the necessity forfrequent repairs in the Way of dressing,adjusting or repairing doors and door casing members.

The casing member 11 closes the end of the rabbet l4, and no openings orspaces are formed and, no members are left to protrude to render thedevice objectionable v V I desire it to be understood that althoughspecific terms are employed,- they are used in a generic and descriptivesense and not Copies of this patent may be obtained for five cents each,by

for purposes of limitation, the scope of the invention being set forthin the appended claim.

Washers may be mounted behind the heads of the bolts or screws 16, ifdesired.

I claim as my invention A device of the class described, comprising, incombinaiton with a hinged door, and a, fixed jamb member adjacent thefree margin of said door When in closed position, said jamb member beingformed With a vertical .r abbet in alinementwith said door, anadjustable strip mounted in said rabbet, leaf springs between said fixedjamb member and adjustable strip, said springs extending transversely ofand engaging at their ends with said strip adjacent the mar ginsthereof, and adjustable connecting devices passing through said strip,said springs and through said fixed jamb member, Whereby said strip maybe adjusted and held against oscillation relative to the door.

Signed by, me at Des Moines, Iowa, this 28" day of November; 1916; V

CHARLES C. SMITH.

addressing the commissionerv of Patents,

Washington, D. G.

